SACRIFICIAL ANODE SYSTEM Connecting the Metal with the anode of the metal which has the lower electric potential such as Al, Mg and Zn and using the electricity generated by the local action of batteries through that connection. The metal ion from the metal which has the lower electric potential consumes its ion as the electricity wears on. That is, by the sacrificial corrosion of the metal which has the lowe electric potential, it prevents the corrosion of the Metal. Zn-ANODE ZN-ANODE is mainly composed of 99.995% purity of Zn and using in the seawater, seawater ground. In addition, through its safety, it could apply to the inside part of ship such as the Ballast tank. Al-ANODE Al-ANODE which is alloy anode of Al-Zn-In and used widely over the world. Compared to the other anodes, it has the huge electric capacity and light weight so the most economical sacrificial anode needed for the large-scale structure material such as harbors, marine structures and ship. TEM-ANODE TEM-ANODE is mainly composed of Al and its relatively huge effective-electrical potential difference, it could offer the various applications including the corrosive condition and especially good for the temporary protection from the rock-climbing of ship period (instead of I.C.C.P SYSTEM).